Matrix-synapse
43 CVEs tracked. None of them is in CISA KEV.
This hub aggregates every CVE we track for Matrix-synapse, a product in the oss libraries space. Use it to gauge the current risk picture and drill into individual advisories.
Matrix-synapse CVEs per month
| Month | CVEs |
|---|---|
| 2024-10 | 0 |
| 2024-11 | 0 |
| 2024-12 | 6 |
| 2025-01 | 0 |
| 2025-02 | 0 |
| 2025-03 | 1 |
| 2025-04 | 0 |
| 2025-05 | 0 |
| 2025-06 | 0 |
| 2025-07 | 0 |
| 2025-08 | 0 |
| 2025-09 | 0 |
| 2025-10 | 1 |
| 2025-11 | 0 |
| 2025-12 | 0 |
| 2026-01 | 0 |
| 2026-02 | 0 |
| 2026-03 | 0 |
| 2026-04 | 0 |
| 2026-05 | 0 |
| 2026-06 | 0 |
| 2026-07 | 0 |
| 2026-08 | 0 |
| 2026-09 | 0 |
Severity
How the 43 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.
- Critical2
- High11
- Medium21
- Low7
Latest CVEs
The 15 most recently published vulnerabilities affecting Matrix-synapse.
- CVE-2025-61672Synapse: Invalid device keys degrade federation functionality—
- CVE-2025-30355Synapse vulnerable to federation denial of service via malformed events7.1
- CVE-2024-37303Synapse unauthenticated writes to the media repository allow planting of problematic content5.3
- CVE-2024-37302Synapse denial of service through media disk space consumption7.5
- CVE-2024-52805Synapse allows unsupported content types to lead to memory exhaustion7.5
- CVE-2024-52815Synapse allows a a malformed invite to break the invitee's `/sync`5.3
- CVE-2024-53867Synapse Matrix has a partial room state leak via Sliding Sync4.3
- CVE-2024-53863Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders9.1
- CVE-2024-31208Synapse's V2 state resolution weakness allows DoS from remote room members6.5
- CVE-2023-43796Synapse vulnerable to leak of remote user device information5.3
- CVE-2023-45129matrix-synapse vulnerable to denial of service due to malicious server ACL events4.9
- CVE-2023-41335Temporary storage of plaintext passwords during password changes in matrix synapse3.7
- CVE-2023-42453Improper validation of receipts allows forged read receipts in matrix synapse3.1
- CVE-2023-32683URL deny list bypass via oEmbed and image URLs when generating previews in Synapse3.5
- CVE-2023-32682Improper checks for deactivated users during login in synapse5.4
Product grouping is registry-driven, with AI assist and human review. How it works